The magnetic moment of a Dirac neutrino with a non-zero mass is estimated in the (extended) standard
model to be [1]}, [2]}, [3]}
\(\mu _\nu \simeq \frac{3G_F}{4\sqrt{2}\,\pi ^2} m_\nu m_e \mu _B \simeq 3 \times 10^{-21} m_{-2} \mu _B;\) 
